UUUP Tools

Developer Tools

Query String Builder for URL Parameters

Build a query string from key/value pairs in your browser and encode special characters. Useful for API debugging, tracking links, and share URL assembly.

Quick switch→URL Parser
URLQuery
Quick switch:URL ParserURL BuilderURL Encode/Decode

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Use cases

  • Assemble API debugging URLs
  • Build tracking or share parameters
  • Convert multiline key=value pairs into a query string

How to use

  1. Enter key=value pairs one per line
  2. Review the generated query string
  3. Copy the result into your target URL

Example input and output

Pairs

q=uuup tools\nlang=en-US

Query

?q=uuup%20tools&lang=en-US

FAQ

Does it URL-encode keys and values?

Yes. Both keys and values are encoded with encodeURIComponent so spaces and special characters do not break the query.

How is this different from the URL builder?

This tool focuses on the query string. The URL builder also handles protocol, host, path, and hash.

Tools

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Parse a URL into protocol, host, port, path, query, and hash fields, and list each query parameter name and value. Useful for debugging API URLs and share links.

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URL Encode/Decode

URL Encoder and Decoder

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Percent-encode or decode text with encodeURIComponent or encodeURI. Useful for query values, non-ASCII paths, and API debugging. All processing stays in the browser.

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